Material: Made of zinc alloy, not easy to rust or break, sturdy and durable to use for a long time. Size: The meter box key total length is 53mm/2.09inch, the head outer diameter is 13mm/0.51inch, triangle size is 8x2mm/0.31x0.08inch, compatible with most triangular keyholes. Application: Apply for opening and locking most power distribution cabinets, gas meter box, water meter box, electrical cabinets, elevators, and it is also an excellent wrench. Design: The meter box key is in T-shaped design, while the handle is D-shaped, which is helpful for you to make advantage of your strength and finish your work in an efficient way. Portable: The triangle socket key is small, exquisite and light in weight. You can carry it with you so that you can use it w.